Solve Equations (no parenthesees)

What is the first step in solving this equation:
5x + 7 = 12

• Divide by 5
• Subtract 5
• Multiply by 7
• Subtract 7

Solve for x:
8x - 10 = -34

• 4
• 3
• -3
• -24

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k

The steps in solving 5b - 6 = 24 are: 

• Add 6 to both sides and divide both sides by 5
• Add 6 to both sides and multiply both sides by 5
• Subtract 6 from both sides then multiply both sides by 5
• Subtract 6 from both sides then divide both sides by 5

Solve.   n - (-2) = -14

• -16
• 16
• 12
• -12

Solve   -3x + 5 = -16

• 9
• 8
• -7
• 7

Solve for x.

• x = 21
• x = 7
• x = −21
• x = 4

Solve: x + 3x - 2x = 12

• 2
• 6
• -2
• -6

Write an equation.
A number is doubled, then 9 is added. The result is 23.

• 2x + 9 = 23
• 2x - 9 = 23
• 2x + 9x = 23
  2x + 9x =23
• 9 - 2x = 23

x + 4 = 11

• 44

• 7

• 15

• 3